package lab03.test12;

import java.sql.*;

public class Test {
    public static void main(String[] args) {
        //加载驱动
        Connection connection=null;
        Statement statement=null;
        ResultSet resultSet = null;
        //表名字：t_users
        String sql="select * FROM t_users";
        String sql1="select * FROM t_users where username='admin'" ;
        String sql2="select * from t_users where username='admin' and password='123456'";
        String sql3="select * from t_users where register_datetime>10000000";
        try {
            Class.forName("com.mysql.jdbc.Driver");
            connection= DriverManager.getConnection(
                    "jdbc:mysql://localhost:3306/java_2017?serverTimezone=UTC",
                    "root",
                    "123456"
            );

            statement = connection.createStatement();
            resultSet = statement.executeQuery(sql);
            resultSet = statement.executeQuery(sql1);
            resultSet = statement.executeQuery(sql2);
            resultSet = statement.executeQuery(sql3);
            while (resultSet.next()) {
                System.out.println(resultSet.getString(1) + " " + resultSet.getString(2) + " " + resultSet.getString(3) + " " + resultSet.getString(4));
            }
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (SQLException e) {
            e.printStackTrace();
        } finally {
            try {
                statement.close();
                connection.close();
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }
    }
}